Today I started to implement enemy spawning. Portals will appear on the outskirts of the room, spawning enemies. In the original "One Room Dungeon," walls and enemies both spawned all over the room. In the remake, walls fall in the center, and enemies spawn in the area surrounding the center. The spawning system is not done yet: I need to implement "intelligent" spawning and make sure every enemy can spawn.
Slimes now shoot particles everywhere when they land (as suggested by a commenter on a prior update. Thanks for the suggestion!)
Enemies sitting under falling walls get squashed now (I plan to make the effect less bland later.)